Series star (and executive producer) Amanda Tapping adds one more job to her daily duties in this Friday's episode of "Supernatural." She will direct.

And it's an interesting episode to say the least. Will (Robin Dunne) goes up against the heads of the Sanctuary Network in an effort to defend Tapping's character, Dr. Magnus, who is charged with what is being described as a "shocking murder."

However, as the evidence continues to stack up against Magnus, even Will starts to have trouble finding a way to convincingly defend her innocence.

"Sanctuary" airs Fridays at 10 p.m. ET on Syfy.